I am trying to get single products data from mongodb in reactjs but when I am mapping that data its not mapping and giving this error:
this is my backend way of getting single prod:
const getProdsById = asyncHandler(async (req, res) => {
const prod = await Prod.findById(req.params.id);
if (prod) {
res.json(prod);
} else {
res.status(404);
throw new Error("Product not found");
}
});
this is the routes page:
const {
getProds,
getProdsById,
postProds,
updateProds,
delProds,
} = require("../controllers/ProdControllers");
router.route("/").get(getProds).post(postProds);
router.route("/:id").delete(delProds).put(updateProds).get(getProdsById);
i tested this by using postman and it worked there easily but in the react part its not working and giving error!
[![enter image description here][2]][2]
product collection model:
const mongoose = require("mongoose");
const prodScheme = mongoose.Schema(
{
pname: {
type: String,
required: true,
},
longname: {
type: String,
required: true,
},
shortname: {
type: String,
required: true,
},
specs: {
type: Array,
required: true,
},
price: {
type: Number,
required: true,
},
discount: {
type: Number,
required: true,
},
netprice: {
type: Number,
required: true,
},
ratings: {
type: Number,
required: true,
},
category: {
type: Object,
required: true,
},
brand: {
type: Object,
required: true,
},
banner: {
type: String,
required: true,
},
},
{
timestamps: true,
}
);
module.exports = mongoose.model("Prod", prodScheme);
my react frontend:
let [searchParams, setSearchParams] = useSearchParams();
const [Prods, setProds] = useState([]);
const getData = async () => {
try {
const presponse = await fetch(`/api/prods/${searchParams.get("id")}`);
const pjson = await presponse.json();
if (presponse.ok) {
setProds(pjson);
}
} catch (err) {
// console.error(err);
// alert(err.message);
}
};
useEffect(() => {
getData();
}, [Prods]);
{Prods.map((prod) => (
<h2>{prod.pname}</h2>
))}
btw searchParams is working fine i can see the exact id in url box aswell and also i printed it in console then also tested it with postman and it works fine
Related
While trying to save data into postgres database using sequelize BlogModel.create() system failed to save the data into table and server is returning columns createdat, updatedat, multiple times in console. ( please see below ). In the scheme I have added the column only once, can someone advise on this issue here ?
Executing (default): INSERT INTO "userBlogs" ("id","email","blogdetails","tags","createdat","updatedat","createdAt","updatedAt") VALUES (DEFAULT,$1,$2,$3,$4,$5,$6,$7) RETURNING "id","email","blogdetails","tags","createdat","updatedat","createdAt","updatedAt";
//userBlogs.js
'use strict';
module.exports = (sequelize, DataTypes) => {
const userBlogs = sequelize.define('userBlogs', {
id: {
type: DataTypes.INTEGER(10),
allowNull: false,
primaryKey: true,
autoIncrement: true
},
email: {
type: DataTypes.STRING(255),
allowNull: false
},
blogdetails: {
type: DataTypes.TEXT,
allowNull: false
},
tags: {
type: DataTypes.STRING(255),
allowNull: false
},
createdat: {
type: DataTypes.DATE,
allowNull: false,
defaultValue: DataTypes.NOW
},
updatedat: {
type: DataTypes.DATE,
allowNull: false,
defaultValue: DataTypes.NOW
}
}, {
timestamps: true,
tableName: 'userBlogs'
});
return userBlogs;
};
//server.js
const usersBlogSchema = require('./modals/userBlogs');
const BlogModel = usersBlogSchema(sequelize, DataTypes);
app.post('/service/createblogs', async (req, res, next)=> {
try {
const userEmail = req.body.email;
const blogDetails = req.body.blogValue;
const tags = req.body.tagValue;
if (Object.keys(req.body).length === 0) {
res.status(403).json({ fail: "Invalid blog request or blog request is blank !" });
} else {
var requestData = {email:userEmail, blogdetails:blogDetails, tags:tags };
const createBlogRequest = await BlogModel.create(requestData);
res.status(200).json({ success: true });
}
} catch (e) {
console.log(e)
return next(e);
}
});
Returning createdAt and updatedAt multiple times because you have added columns (createdAt and updatedAt )and also timestamps:true ,
timestamps also adds these both columns
use either columns or timestamps
'use strict';
module.exports = (sequelize, DataTypes) => {
const userBlogs = sequelize.define('userBlogs', {
id: {
type: DataTypes.INTEGER(10),
allowNull: false,
primaryKey: true,
autoIncrement: true
},
email: {
type: DataTypes.STRING(255),
allowNull: false
},
blogdetails: {
type: DataTypes.TEXT,
allowNull: false
},
tags: {
type: DataTypes.STRING(255),
allowNull: false
},
}, {
timestamps: true,
tableName: 'userBlogs'
});
return userBlogs;
};
I have problem with getting data from DB. I want to get "collections" Array from mongoDB and render it in table component, but query returns null because of problem "user not found". Interesting thing is that if I use {email: req.body.email} in updateOne query to search for user and then create new collection it works and user is found.
getCollections.js
const router = require("express").Router();
const User = require("../models/user");
router.get("/", (req, res) => {
var query = { email: req.body.email };
User.find(query, (err, result) => {
if (err) {
res.json({ status: "error", error: "User not found" }, err);
} else {
res.json(result);
}
});
});
module.exports = router;
frontend getCollections query
useEffect(() => {
const url = "http://localhost:5000/api/getCollections";
// const url = `https://item-collection-app-bz.herokuapp.com/api/getCollections`;
axios
.get(url, { email: localStorage.getItem("email") })
.then((response) => {
setListOfCollections(response.data);
});
});
user.js UserSchema
const jwt = require("jsonwebtoken");
const mongoose = require("mongoose");
const userSchema = new mongoose.Schema({
_id: { type: mongoose.Schema.Types.ObjectId, required: true },
username: { type: String, require: true },
password: { type: String, require: true },
email: { type: String, require: true },
admin: { type: Boolean },
blocked: { type: Boolean },
collections: [
{
_id: { type: mongoose.Schema.Types.ObjectId, required: true },
coll_name: { type: String },
type: { type: String },
coll_desc: { type: String },
coll_image: { type: String },
items: [
{
_id: { type: mongoose.Schema.Types.ObjectId, required: true },
item_name: { type: String },
item_desc: { type: String },
comments: [
{
user: { type: String },
comment: { type: String },
comment_id: { type: String },
},
],
likes: { type: Number },
item_image: { type: String },
upload_date: { type: String },
},
],
},
],
});
userSchema.methods.generateAuthToken = function () {
const appToken = jwt.sign({ _id: this._id }, process.env.JWTPRIVATEKEY, {
expiresIn: "7d",
});
return appToken;
};
const User = mongoose.model("user", userSchema);
module.exports = User;
mongoDB
mongoDB structure
Tried User.findOne(), User.find()
SOLUTION
Thank you #Varun Kaklia. The solution is changing router.get and axios.get to router.post and axios.post.
Hey #1zboro1 first check did you receive any data from frontend inside Routes like-
const router = require("express").Router();
const User = require("../models/user");
router.get("/", (req, res) => {
const email = req.body.email;
console.log("Email from frontend", email)
var query = { email: req.body.email };
if (email != null || undefined) {
try {
const user = await User.find({ email});
console.log("User Details in User Routes of Backend",user)
if (user.length > 0) {
const currentUser = {
name: user[0].name,
email1: user[0].email1,
isAdmin: user[0].isAdmin,
_id: user[0]._id,
};
// console.log("Get User in User Routes of Backend", currentUser)
res.status(200).send(currentUser);
}
} catch (error) {
res.status(404).json({
message: "Something Went wrong",
});
}
Hope this code solve your query and give you desired result. If you still facing issue lemme know.
Thanks
I'm building one of my first admin areas for a site in React. I'm using mongoose and MongoDB. When I submit the form to add an artist to the db it does everything correctly and I can see it return the data as a JSON Object. When I submit a form that adds a piece of artwork to an artist it looks like it works but it actually does not add anything to the database as the data is sent as a string. I believe the only difference is one route is a POST and one is a Patch. I can't find any other difference. How can I make my form send data as a JSON instead of a string.
My Model
const mongoose = require("mongoose");
const Schema = mongoose.Schema;
const artistSchema = new Schema({
first_name: { type: String, required: true },
last_name: { type: String, required: true },
artist_painter: { type: Boolean, required: false},
artist_sculptor: { type: Boolean, required: false},
artist_other: { type: Boolean, required: false},
featured_image: { type: String, required: false},
artwork:[
{
type: { type: String, required: false},
title: { type: String, required: false},
width: { type: Number, required: false},
length: { type: Number, required: false},
depth: { type: Number, required: false},
image: { type: String, required: false},
media: { type: String, required: false},
price: { type: Number, required: false},
newRelease: { type: Boolean, required: false}
}
]
});
const Artist = mongoose.model("Artist", artistSchema);
module.exports = Artist
API Routes
// Matches with "/api/artists"
router.route("/")
.get(artistsController.findAll)
.post(artistsController.create);
// Matches with "/api/artists/:id"
router
.route("/:id")
.get(artistsController.findById)
.put(artistsController.update)
.delete(artistsController.remove);
// Matches with "/api/artists/art/:id"
router
.route("/art/:id")
.patch(artistsController.addArtById)
module.exports = router;
Artist Controller
const db = require("../models");
// Defining methods for the ArtistsController
module.exports = {
findAll: function(req, res) {
db.Artist
.find(req.query)
.then(dbModel => res.json(dbModel))
.catch(err => res.status(422).json(err));
},
findById: function(req, res) {
db.Artist
.findById(req.params.id)
.then(dbModel => res.json(dbModel))
.catch(err => res.status(422).json(err));
},
create: function(req, res) {
db.Artist
.create(req.body)
.then(dbModel => res.json(dbModel))
.catch(err => res.status(422).json(err));
},
update: function(req, res) {
db.Artist
.findOneAndUpdate({ _id: req.params.id }, req.body)
.then(dbModel => res.json(dbModel))
.catch(err => res.status(422).json(err));
},
remove: function(req, res) {
db.Artist
.findById({ _id: req.params.id })
.then(dbModel => dbModel.remove())
.then(dbModel => res.json(dbModel))
.catch(err => res.status(422).json(err));
},
addArtById: function(req, res) {
db.Artist
.findOneAndUpdate({ _id: req.params.id }, {$push: { artwork: req.body } } )
.then(dbModel => res.json(dbModel))
.catch(err => res.status(422).json(err));
},
};
I'm new to mongoose and i have a problem.
In my app, i have a Travel model like this:
const travelSchema = new mongoose.Schema({
title: {
type: String,
required: [true, 'Please add a title'],
trim: true,
maxlength: [50, 'Title can not be more than 50 characters'],
},
cities: [
{
type: mongoose.Schema.Types.ObjectId,
ref: 'City',
},
],
});
and a City model like this :
const citySchema = new mongoose.Schema({
name: {
type: String,
required: true,
trim: true,
},
location: {
type: {
type: String,
enum: ['Point'],
required: true,
},
coordinates: {
type: [Number],
required: true,
},
},
travels: [
{
type: mongoose.Schema.Types.ObjectId,
ref: 'Travel',
},
],
});
So when i delete a travel, i want to remove the travel_id from the 'travels' field of the cities which are concerned by the travel.
Here i am:
exports.deleteTravel = asyncHandler(async (req, res, next) => {
const travel = await Travel.findByIdAndDelete(req.params.id);
travel.cities.map(cityId => {
City.findByIdAndUpdate(
cityId,
{ travels: travels.filter(id => id !== travel._id) },
{
new: true,
runValidators: true,
}
);
});
res.status(200).json({ success: true, data: {} });
});
I got this error message: Error: travels is not defined
Do you have any idea why?
Many thanks !
It's working like this :)
exports.deleteTravel = asyncHandler(async (req, res, next) => {
const travel = await Travel.findByIdAndDelete(req.params.id);
travel.cities.map(async cityId => {
await City.findByIdAndUpdate(
cityId,
{ $pull: { travels: travel._id } },
{
new: true,
runValidators: true,
}
);
});
Hello I'm working on a social network project using MERN Stack and in there user can either make a post with only text or can make a post by uploading an image along with some text as a caption, but the problem is that when a user doesn't wish to upload image and just want to post only with text and leaves postImage field empty then this error occurs Cannot read property 'path' of undefined what can be the solution for this, I'm attaching the post schema, post routes and post state:
Post Schema:
const mongoose = require('mongoose');
const postSchema = mongoose.Schema({
user: {
type: mongoose.Schema.ObjectId,
ref: 'Users',
},
text: {
type: String,
required: [true, 'post cannot be empty'],
},
postImage: {
type: String,
},
name: {
type: String,
},
avatar: {
type: String,
},
likes: [
{
user: {
type: mongoose.Schema.ObjectId,
ref: 'User',
},
},
],
comments: [
{
user: {
type: mongoose.Schema.ObjectId,
ref: 'User',
},
comment: {
type: String,
required: true,
},
name: {
type: String,
},
avatar: {
type: String,
},
date: {
type: Date,
default: Date.now,
},
},
],
date: {
type: Date,
default: Date.now,
},
});
module.exports = mongoose.model('Post', postSchema);
Post Route:
const express = require('express');
const router = express.Router();
const auth = require('../middleware/auth');
const Post = require('../models/postModel');
const multer = require('multer');
const storage = multer.diskStorage({
destination: function (req, file, cb) {
cb(null, './uploads');
},
filename: function (req, file, cb) {
cb(null, file.originalname);
},
});
const fileFilter = (req, file, cb) => {
if (
file.mimetype === 'image/jpeg' ||
file.mimetype === 'image/png' ||
file.mimetype === 'image/gif'
) {
cb(null, true);
} else {
cb(new Error('The supported file types are jpeg, png and gif'), false);
}
};
const upload = multer({
storage: storage,
limits: {
fileSize: 1024 * 1024 * 5,
},
fileFilter: fileFilter,
});
const { check, validationResult } = require('express-validator');
const User = require('../models/userModel');
router.post(
'/',
upload.single('postImage'),
[auth, check('text', 'Text is required').not().isEmpty()],
async (req, res) => {
const errors = validationResult(req);
if (!errors.isEmpty()) {
return res.status(400).json({ errors: errors.array() });
}
try {
const user = await User.findById(req.user.id).select('-password');
const newPost = new Post({
text: req.body.text,
postImage: req.file.path,
name: user.name,
avatar: user.avatar,
user: req.user.id,
});
const post = await newPost.save();
res.json(post);
} catch (err) {
console.error(err.message);
res.status(500).send('Server Error');
}
}
);
Post State:
const createPost = async postData => {
try {
const config = {
headers: {
'Content-Type': 'multipart/form-data',
},
};
const res = await axios.post('/api/posts', postData, config);
dispatch({
type: ADD_POST,
payload: res.data,
});
} catch (err) {
dispatch({
type: POST_ERROR,
payload: err.response.msg,
});
}
};
You can simply check if req.file is defined - if yes set postImage to its path, else set it to undefined:
const newPost = new Post({
text: req.body.text,
postImage: req.file ? req.file.path : undefined,
name: user.name,
avatar: user.avatar,
user: req.user.id,
});